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NIS EN EN EN MI MN Ell HUI MI E NS NM ME NMI EN NMI 1111 UN INN
<br /> 1 1
<br /> NOTES
<br /> 1. W=MAXIMUM WIDTH OF TRENCH.FOR PIPES 15"OR
<br /> LESS IN DIA W=40".FOR PIPES 18"OR GREATER W=1.5 X
<br /> EXISTING
<br /> 0 0 0 0 0 I.D.+18'.PIPE MUST BE CENTERED IN TRENCH.
<br /> IPAVEMENT
<br /> 2. ALTERNATE SLOPING TRENCH WALL TO MEET O.S.H.A.
<br /> REQUIREMENTS(NO SLOPES STEEPER THAN 1:1 EXCEPT
<br /> 18"MIN FOR ROCK).
<br /> r'` �� 4I —141110 3. SUITABLE NATIVE MATERIAL OR IMPORTED GRAVEL
<br /> i ( BORROW AS DIRECTED.COMPACT TO 90%MAXIMUM
<br /> (I—z �' 1' DENSITY.
<br /> io ' 14. FOUNDATION GRAVEL IF REQUIRED BY THE ENGINEERTO
<br /> // 1 REPLACE UNSUITABLE MATERIAL.SHALL BE FOUNDATION
<br /> / I MATERIAL CLASS A,B OR AS APPROVED BY THE
<br /> aotM' 1 COMPACTION ENGINEER.
<br /> z 0 I ��, �, �, —)_� PROVIDE UNIFORM SUPPORT UNDER PIPE 5. IF DIRECTED BY THE ENGINEER THE TOP THREE TO FIVE
<br /> ocr,g D 1 OI �, —y BARREL. FEET OF BACKFILL SHALL BE IMPORTED GRAVEL BORROW
<br /> a z 1 ' Ii�,0+„ 4 /— 0 OR SUITABLE NATIVE MATERIAL COMPACTED TO 95%
<br /> ��,�,�,�,� MAXIMUM DENSITY.
<br /> t,�,�,3,�, -III- HAND TAMP UNDER PIPE HAUNCHES FOR ALL
<br /> 0 ��,�,�,�,� III � BEDDING MATERIALS. 6. SEE CITY OF EVERETT STANDARD DWG 326 FOR
<br /> t,-,��,�I�;,�,� —)((_ ALL BACKFILL MATERIAL SHALL BE PLACED IN PAVEMENT PATCH DETAILS.
<br /> .,#,„,,„ I I I— LIFTS NOT TO EXCEED 12 INCHES BEFORE
<br /> ��,�,�,�, 1 COMPACTION UNLESS AUTHORIZED BY THE 7. VERTICAL TRENCH WALLS WITH SHORING TO CONFORM
<br /> ►�I �, —I I ( ENGINEER DUE TO THE CHARACTER OF THE TO O.S.H.A.REGULATIONS.
<br /> O ��O&W4.74O4. 1 F 1— MATERIAL AND THE COMPACTING EQUIPMENT. 8. SUBGRADE OR GROUND SURFACE IN NON-PAVED AREAS.
<br /> t��`►,,�,��,�, COMPACT BEDDING MATERIAL TO 90%
<br /> �,�,�,�,� UPPER LIMIT OF 9. EXCAVATED NATIVE MATERIAL OR STOCKPILED BACKFILL
<br /> PIPE ZONE MAXIMUM DENSITY EXCEPT DIRECTLY OVER
<br /> O /, PIPE,HAND TAMP ONLY.MECHANICAL MATERIAL.
<br /> 3 / 1 COMPACTION OF BACK FILL MATERIAL SHALL
<br /> NOT BEGIN UNTIL THE DEPTH OF COMPACTED 10. FOR ALL TRENCHING TRANSVERSE TO THE ROADWAY
<br /> MATERIALS ..-1BACKFILL MATERIAL IS 2 FEET ABOVE THE TOP BACKFILL ABOVE THE PIPE ZONE SHALL BE CONTROLLED
<br /> OF PIPE. DENSITY FILL.SEE SECTION 3-9.6&3-20.1 OF THESE
<br /> PIPE BEDDING MATERIAL SHALL BE STANDARDS.
<br /> CRUSHED SURFACING BASE COURSE _ EACH LIFT SHALL BE MECHANICALLY
<br /> CONFORMING TO SECTION 9-03.9(3) 1 I—/ p COMPACTED TO THE REQUIRED DENSITY PRIOR 11. FOR UTILITY CUTS SUCH AS GAS,TELEPHONE,POWER,
<br /> OF THE STANDARD SPECIFICATIONS TO PLACING SUBSEQUENT LIFTS OF BACKFILL AND CABLE TV LONGITUDINAL TO THE ROADWAY,
<br /> BACKFILL SHALL BE CONTROLLED DENSITY FILL.SEE
<br /> 3 FOR ROAD,BRIDGE AND MUNICIPAL �I I I i �; MATERIAL. SECTION 3-9.5 OF THESE STANDARDS.
<br /> o CONSTRUCTION WSDOT/APWA. I—I► �� `
<br /> COMPACTION TESTS SHALL BE AS REQUIRED BY
<br /> OVER EXCAVATION AND PLACEMENT •������������ THE CITY ENGINEER,BUT IN NO CASE LESS THAN
<br /> r. OF FOUNDATION MATERIAL,IF _—III ►�j�� j�j�j���j�j�j�j� 2 TESTS EVERY 200 FEET OF TRENCH(ONE AT
<br /> REQUIRED SHALL BE FOUNDATION ►�•�j� ��j���j�j�j���j`� LOWER LIMIT SUBGRADE AND ONE AT 50%OF TRENCH
<br /> oLy. MATERIAL CLASS AORB I—I►'••• ��••��•����� OF PIPE ZONE DEPTH).
<br /> 3 CONFORMING TO SECTION 9-03.17 _III__I —
<br /> OF THE STANDARD SPECIFICATIONS — I �_ IN PLACE DENSITY AND MOISTURE CONTENT
<br /> " FOR ROAD,BRIDGE AND MUNICIPAL W(SEE NOTED 0 WILL BE DETERMINED USING NUCLEAR
<br /> CONSTRUCTION WSDOT/APWA. METHOD,ASTM 2922-71.
<br /> 8 PUBLIC WORKS
<br /> 4 . EVERETT
<br /> LABORATORY MAXIMUM DRY DENSITY AND WAS H I NGTO N DEPARTMENT
<br /> W d OPTIMUM MOISTURE CONTENT WILL BE pM SASS lonwovo�r anu"iww e�M I°"Fsn
<br /> DETERMINED USING THE MODIFIED PROCTOR ,n. 12/11/2019
<br /> METHOD IN ACCORDANCE WITH ASTM D-1557.
<br /> s$ TYPICAL TRENCH SECTION 614
<br /> In
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